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10
NTU Optical Network Terminals
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static IP address and DHCP (DHCP client on WAN side, DHCP server on
LAN side);
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UPNP;
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IPSec;
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NAT;
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Firewall;
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NTP;
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QoS;
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IGMP snooping;
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IGMP proxy;
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Parental Control;
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Storage service.
Wi-Fi:
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802.11b/g/n standards.
VoIP
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SIP
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Audio codecs: G.729 (A), G.711 (A/U), G.723.1;
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ToS for RTP packets;
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ToS for SIP packets;
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Echo cancellation (G.164 and G.165 guidelines);
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Silence detector (VAD);
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Comfortable noise generator;
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DTMF signal detection and generation
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DTMF transmission (INBAND, RFC2833, SIP INFO)
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Fax transmission: upspeed/pass-through. G.711, T.38
Value Added Services (VAS):
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Call Hold;
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Call Transfer;
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Call Waiting;
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Forward unconditionally;
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Forward on ‘no answer’;
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Forward on ‘busy’;
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Caller ID Display for ETSI FSK;
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Anonymous calling;
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Warmline;
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Flexible dial plan;
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Voice mail notifications (MWI);
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Anonymous call blocking;
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Call Barring;
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DND (Do not disturb)
Firmware updates via web interface, TR-069, OMCI.
Remote monitoring, configuration, and setup:
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TR-069;
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Web interface;
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OMCI;
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Telnet.
Fig. 3 shows a diagram of the NTU equipment connection.